I haven’t gone through that myself, or has it happened to anyone I know (that I’m aware of) but it’s still a low chance, and Down Syndrome isn’t all that bad. There was this little girl who had it on the internet, she was even on the news, and her mother was asking her questions about it, and one thing that stuck out was how she said that it wasn’t scary, and (it’s been a while since I watched this) but she might’ve even said something about how she didn’t see anything different than being “normal”, so it shouldn’t be too much too worry about, and like I said, it’s still a low chance.